Israel's ancient and present deliverance by the same Jehovah

Psalm 114 is of the highest style of poetry, but is important to
us as directly connecting the ancient deliverance of Israel out of
Egypt with the present deliverance of the people, and seeing the
same Jehovah in both calling the earth to tremble at the presence of
Jehovah. It was right in those days. At Jacob's deliverance then,
the sea fled and Jordan was driven back. What was this? Was it
affright before the presence of man? The earth was now to tremble
before Him who appeared for the deliverance of His people then, and
for their sakes turned the sea into dry land, and the flint stone
into a springing well.